Cold or Hot valve adjustment with Schneider 274F Cam

[jalexquijano]

Im having an issue with cylinder #4 as whenever i race the car and make a couple of stops and leaving the car at idle for 5 mins in the garaje, spark plug 4 (NGK BP5ES) comes out fouled and sooty. I have both front and rear roundtop su carbs at 3 turns clockwise. All of the other plugs are burning correctly. Could my car be running only on 5 cylinders? mechanic says i need a valve adjustment but cold and not hot. Do you concur???? the car does not have the original cam but a Schneider 274F to compensate as my engine was bore to 2.6 L and not 2400 cc as original.

http://schneidercams.com/274FL6.aspx

Is a valve adjustment at cold required better than Hot?

[Dave WM]

Injector ticking? listen to it compare to others

Spark plug firing, put fresh plug on wire and lay on top of valve cover to confirm.

I adjust valves cold, also do a compression check.

Edited February 9, 2017 by Dave WM

[gnosez]

Hard to do a consistent "hot" valve adjustment since by the time you get to the last one it's a whole lot cooler than the 1st one you did. The valve train wouldn't change temp during a "cold" adjustment unless you got really warm hands.

[siteunseen]

He's got carbs, no injectors. I do my valves cold too then come back and check them hot. One or two may need readjustment when hot.

You will have different specs for a regrind than stock cam. Find those numbers first.